I can forgive you for many things—whether it’s how you act or what you say to me. But I will never forgive you for hurting my mother’s feelings. Yes, I may have my own issues with her, but that doesn’t mean I ever wanted to hurt her, and it certainly doesn’t give us the right to do so.
I understand that your feelings are valid. I know you're in pain too. But that doesn’t justify hurting her in return. Just because you’ve heard things that made you feel hurt doesn’t mean you have the right to inflict the same pain on her.